If this were my car, the first thing i would do is de-badge.
Second i'd get rid of the eyelids, and either get some euro style xenons from Ebay, or black or white vinyl amber-gones.
Blacklines would look sex, and the M3 bumper would be more ///M-ee if the fogs were gone. Also a trunk spoiler would finish off the look nicely and they are pretty cheap!

Overall id say youre off to an excellent start, and i think the car is awesome!
What have you done to the interior?